What does the number designation of canvas refer to?

The number designation of canvas specifically refers to the weight of the fabric, measured in ounces per square yard. This weight designation is crucial for determining the suitability of the canvas for various applications, such as sails, tarps, or other marine uses. Heavier canvas generally provides more durability and strength, which is essential for items exposed to harsh conditions. The weighting system helps users distinguish between different grades and types of canvas based on their intended use, allowing for informed decisions regarding material selection. Understanding the weight specification is vital for anyone working with canvas in a maritime context, ensuring that the materials used will perform adequately for their specific tasks.